With reference to the first possible implementation manner of the fifth aspect, in a second possible implementation manner of the fifth aspect, the user equipment further includes a first measuring module configured to measure common pilot channel quality of each cell before the receiving module receives the active set update signaling sent by the RNC; and a first sending module configured to, when the UE is in a non-soft handover area, and when the first measuring module measures that the common pilot channel quality of the micro base station is greater than the preset first threshold value for addition to the first active set and less than the first condition threshold value for addition to the second active set, send a first measurement report to the RNC, so that the RNC sends the active set update signaling to the UE according to the first measurement report, where the first sending module is further configured to: when the UE is in a soft handover area corresponding to the second active set, and when the UE measures that the common pilot channel quality of the micro base station is less than a second condition threshold value for removal of the micro base station from the second active set and greater than a preset second threshold value, send a first measurement report to the RNC, so that the RNC sends the active set update signaling to the UE according to the first measurement report.